Hydraulic packing.



PATENTED MAY 21, 1907.

o. F. RIGBYQ.

HYDRAULIC PACKING.

urmcnxon FILED SEPT. 26,1906.

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UNITED STATES PA TENT OFFICE.

HYDRAULIC PACKING.

Specification of Letters Patent.

Patented May 21, 1907.

Application filed September 26, 1906. Serial No. 336,248.

To a whom it may concern:

Be it known that I, CLARK F. RIGBY, a citizen of the United States,residing at New Martinsville, in the county of Wetzel and State of WestVirginia, have invented certain new and useful Improvements in HydraulicPacking, of which the following is a specification, reference being hadtherein to the accompanying drawing.

This invention relates to an improvement in metallic rod packing, andthe object is to so arrange and combine split rod-embracing rings withsoft metal as to provide a packing which, while adopted for general use,is designed especially for high pressure cylinders.

In the accompanying drawing, Figure 1 is a vertical section view of thepacking before being adjusted or tightened up on the rod, and Fig. 2 isa similar view showing the same adjusted.

Referring to the drawings, 2 designates the cylinder-head or other wallof the chamber through which rod or piston 3 moves.

4 is the stuffing box, 5 the gland, and 6 the gland studs.

Encircling rod 3 is a series of split metal rings 7, the outer or upperend of which is engaged by gland 5, while its inner end bears againstthe soft metal rod-embracing annulus 8 seated in the inner end of thestuffing box. Before being compressed annulus 8 is of substantially thesame diameter as rings 7. Also seated in the inner end of the stuffingbox and encircling annulus 8, but spaced therefrom, is thenon-compressible annular seat 9, which is also spaced slightly from thewall of box 4. Resting on the outer or upper end of this annular seat isthe cup-shaped ring 10, formed preferably of leather with its edge orflange turned inwardly and closely fitting the wall of box 4. Bearingagainst ring 10 is the split annular two-part sleeve 11, formedpreferably of a compressible metal. The engaging faces of the parts ofsleeve 11 are sloping or inclined, thereby facilitating the longitudinalcompression and consequent lateral expansion of the sleeve. As a furtherprecaution against leakage, I have inserted a relatively thin soft metalcasing 12 between sleeve 11 and the split packing rings, thus completelyand fully enveloping the latter.

In operation, the soft metal sleeve 11 is contracted by the inwardmovement of gland 5 and the space between the split rod rings and thebox wall is fully filled With'the laterally expanded and longitudinallycontracted soft metal sleeve. At the same time, annulus 8 is compressedby the inward movement of rings 7, filling the space between the rod andannular seat 9, and causing the rod to be embraced at that point by. asoft metal which in conjunction with split rings 7 forms a mosteffective seat. The cup-shaped ring 10 holds in check any fluid that mayescape out-' wardly past rod 3 beneath rings 7, the presence of suchescaping fluid operating to expand the inturned flange of the cup-ringwhich prevents the fluid from passing out along the wall of the stuffingbox.

I claim 1. In a rod packing, the combination with a stuffing box and agland, of a series of packing rings, and a compressible rod-embracingannulus within the box and forming an inner abutment for the rings andadapted to be compressed thereby.

2. In a rod packing, the combination with a stuffing box and a gland, ofa series of split rod-embracing rings, a two-part sleeve interposedbetween the rings and box, the parts of said sleeve overlapping eachother and having diagonal engaging faces.

3. In a rod packing, the combination with a stuffing box and a gland, ofa series of split rod-embracing rings, a compressible sleeve interposedbetween the rings and the stuffing box, a yielding inner abutment forthe packing rings, and an unyielding inner abutment for the compressiblesleeve.

4. In a rod packing, the combination with a stuffing box and a gland, ofa series of split rod-embracing rings, a soft metal abutment in theinner end'of the box for the rings, a compressible sleeve interposedbetween the rings and the side wall of the box, and a noncompressibleseat inclosing said compressible abutment and itself forming an abutmentfor the inner end of said sleeve.

5. In a rod packing, the combination with a stuffing box and a gland, ofa series of split rod-embracing rings, a compressible abutment for theinner end of the series of rings, an annular non-compressible deviceinclosing the compressible abutment, a split twopart sleeve between saidrings and the wall of the stuffing box and bearing at its inner endagainst said annular device, the sleeve being formed of compressiblemetal and the engaging faces of the parts thereof sloping or inclined.

6. In. a rod packing, the combination with a stuffing box and a gland,"of a series of split rod-embracing rings, a relatively thin casinginclosing the rings, and a laterally expansible and longitudinallycontractible sleeve interposed between the casing and the wall of thestuffing box.

7. In a rod packing, the combination with a stuffing box and a gland, ofa series of split rod-embracing rings, a laterally expansible andlongitudinally contractible sleeve be-' tween the rings and the stuffingbox, an annular seat at the inner end of and of less diameter than thestuffing box and forming an abutment for said sleeve, and a flexibleeupshaped ring interposed between said seat and sleeve and closelyfitting within the stuffing 'box.

8. In a rod packing, the combination with a stufling box and a gland; ofa series of split rod-embracing rings, a soft metal abutment for theinner end of the ring-series, an annular non-compressible devi'oesurrounding the soft metal abutment and of less diameter than theinterior of the stuffing box, a soft metal sleeve interposed between therings and the Wall of the stuffing box, and a flexible cup-shaped ringbetween said sleeve and said non-compressible device, the flexible ringclosely fitting the stuffing box and having its flange or edge extendinginward toward the inner end of the box.

In testimony whereof I aflix my signature in presence of two witnesses.

CLARK F. RIGBY. Witnesses:

B. E. RIGBY, L. I. LEONARD.

